//
// Created by jsjxsy on 2022/8/10.
//
#include <iostream>
using namespace std;
void evaluate(int score) {
  if (score >= 90) {
    cout << "score: " << score << " 优" << endl;
  } else if (score >= 75 && score < 90) {
    cout << "score: " << score << " 良" << endl;
  } else if (score >= 60 && score < 75) {
    cout << "score: " << score << " 中" << endl;
  } else {
    cout << "score: " << score << " 差" << endl;
  }
}
int main(void) {
  evaluate(85);
  return 0;
}
